Vibrating blade rectifier



Dec; 26, 1933. A. MARIANVALLE 1,941,407

VIBRATING BLADE RECTIFIER Filed Dec. 4, 1930 Patented Dec. 26, 1933 i i v VIBRATING BLADE RECTIFIER Albert Marianvalle, Malakoflt, France Application December 4, 1930, Serial No. 500,131, and in France December 9, 1929 3 Claims. (Cl. 200-91) The present invention relates to rectifiers and magnet 4 which ensures the flux necessary to the has for its main object to provide a rectifier which movement of the blade. If the excitation is to will be silent in operation due to the elimination be effected with 4 volts then the solenoid may of noise generally occasioned in known rectifiers consist of 5 gr. of 15/100 gauge wire.

5 by the impact of the moving member on the fixed The whole is then screwed on to a wooden member; a rectifier wherein perfect contact is disc disposed vertically on a panel 6 so as to assured, which will practically never get out of be capable of rotating around an axis 7-(Figs. order, and wherein positive disconnection is pos- 2 and 3). sible should the current be interrupted due to the The apparatus works as follows:

10 almost impossible sticking of the contact. l The solenoid 3, in shunt upon the source of cur- 5 The apparatus essentially comprises a glass tube rent to be rectified, produced upon the vibrating or vessel, filled with an inert gas and containing a blade 2 a magnetization proportional to the invibrating soft iron blade, provided with apoint tensity of the exciting current. Supposing that forming a moving contact, and a drop of mercury the direction of the current is such that the free forming the stationary contact, this drop of merextremity of the blade is a north pole, at that cury being contained in an enlargement of the moment, said extremity will be attracted by the tube. The current is conducted to the mercury south pole of the magnet 4 and repelled by its by means of a platinite wire. The tube containnorth pole. The current inversing itself within ing the vibrating blade is placed within a coil and the solenoid, the force will likewise inverse, itself a permanent magnet ensures the flux necessary and the result will be the continued vibrating to the movement of the blade. The whole is movement of the blade at the frequency of the screwed on to a panel capable of pivoting about a current. I central axis in such manner that the distance be- It is not necessary to refer to the well known tween the moving point and the mercury may be function of the exciting coil and magnet.

: Varied- So that rectification may take place, it is nec- 0 In the accompanying drawing, showing one of essary that the vibrating blade be exactly in the constructional forms of the invention. phase with the current to be rectified, and conse- Fig. 1 is a front elevation of the whole appara quently with the excitation current. Now owing to the self induction of the excit- 30 Fig. 2 is a side elevation thereof, ing solenoid, the magnetic field produced always 5 3 s a plan view of the same, lags slightly in respect of the exciting current.

Fig. 4 shows a glass tube without fittings, and It is possible to correct this lag, however, by Figs. 5 and 6 show two methods of mounting the acting on the blade. It is-obvious that when the platinite current-conducting wire on the vibrating blade is in resonance with the frequency of the 36 ad current, it is in phase with the field of excita- A vibrating soft iron blade 2 is mounted in a tion. If the natural frequency of' vibration of glass tube or vessel 1. At 1 is formed an enlargethe blade be lower than the frequency of the curment or pocket containing a globule of mercury rent, the blade lags behind the magnetic field forming the stationary contact, the movable conand if the natural frequency of the blade be great- 40 tact being formed by the point 2". The vessel 1 er than that of the current, the tongue has a (Fig. 4) is formed from a glass tube, filled with a lead with respect to the magnetic field. This reducing or inert gas, suchas carbon dioxide, or latter case is made use of for compensating exilluminating gas, and sealed off immediately after actly for the self induction of the solenoid. the platinite wire, which does not amalgamate Therefore a particular type of blade will have to 45 with mercury, has been put into position. be designed for each type of solenoid. This The vibrating blades can be manufactured from condition, however, may be readily complied with, a soft iron ribbon 4 (Figs. 5 and 6) to the exsince 'the vibrating blade is extremely light and tremity of which a platinite wire 4 (Fig. 5) is consequently, does not appreciably increase the fixed by some suitable means. This may be efself induction of the solenoid or coil.

50 fected for instance, by hooking a blade 4' of The regulation of the distance of the contact platinite on the soft iron blade, the platinite wire point 8 from the globule of mercury is effected 4* (Fig. 6) being fixed to the platinite blade by by rotating the supporting disc around the axis 7. Dressing. It must be remarked that, to this end, the point The vessel is then placed within an exciting 8 does not strike the centre of the mercury but 65 solenoid 3 (Fig. 1) provided with a permanent that it strikes the mercury near one of its edges,

a rotation of the disc in the clockwise directions causes the iron point (Fig. 1) to approach nearer to the surface of the mercury.

I claim 1. A device of the character described comprising an elongated sealed vessel containing a gaseous fluid and having a pocket formed upon one end portion thereof, a drop of mercury contained in the pocket of said vessel and constituting a fixed contact, a soft iron blade enclosed within said vessel provided with a point at one extremity thereof forming a movable contact disposed to cooperate with said drop of mercury and supported at its remaining extremity on the other end portion of the vessel for vibration therein, a solenoid surrounding the major portion of said vessel, and apermanent magnet arranged about the pocketed end portion of said vessel to ensure the flux necessary to actuate the vibrating blade.

2. A device of the character described comprising an elongated sealed vessel containing a gaseous fluid and having a pocket formed upon one end portion thereof, a drop of mercury contained in the pocket of said vessel and constituting a fixed contact, a soft iron blade enclosed within said vessel and provided with a point at one extremity thereof forming a movable contact disposed to cooperate with said drop of mercury, a relatively strong conducting wire fixed to the remaining extremity of said blade extending through the other end portion of the vessel and supporting the blade for vibration within the latter, a solenoid surrounding the major portion of said vessel, and a permanent. magnet arranged about the pocketed end portion of said vessel to ensure the flux necessary to actuate the vibrating blade.

3. A device of the character described comprising an elongated sealed vessel containing a gaseous fluid and normally mounted in a substantially horizontal position, one end portion of said vessel having a pocket formed thereon, a drop of mercury contained in the pocket of said vessel and constituting a fixed contact, a soft iron blade net arranged about the pocketed end portion of said vessel to ensure the flux necessary to actuate the vibrating blade, and a supporting panel carrying the vessel with said solenoid and permanent magnet and mounted for pivotal movement, whereby to adjustably displace the same and regulate the distance between the mercury contact and its cooperating contact point of the vibrating blade.

ALBERT MARIANVALLE. 

